Answer:
7:3
Step-by-step explanation:
Divide both sides by 4
The race is 111.6 m long.
8 hurdles spaced 12.3 m apart means 7 spaces that are 12.3 m in length; 7*12.3 = 86.1
Add to this the distance to the first hurdle and the distance from the last hurdle:
86.1+15+10.5 = 111.6 m
B2-7b+12=0
(b-3)(b-4)=0
b= 3 or 4
Shape b has the shaded area closest to 63%
Answer:
I think the working is actually unnecessary because of (x-c)=0 and if x is 5 (5-c)=0 c would be 5